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| author | Mikulas Patocka <mpatocka@redhat.com> | 2013-09-20 13:53:22 -0400 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2013-09-24 10:16:02 -0400 |
| commit | 3361dc9538832a2a9150a8c722374ca844bf8dc8 (patch) | |
| tree | 33e1291229090ffc37fd1f2d22a32572751e4067 /drivers/net/xen-netback | |
| parent | 8d65b1190ddc548b0411477f308d04f4595bac57 (diff) | |
| download | linux-3361dc9538832a2a9150a8c722374ca844bf8dc8.tar.bz2 | |
skge: fix invalid value passed to pci_unmap_sigle
In my patch c194992cbe71c20bb3623a566af8d11b0bfaa721 ("skge: fix
broken driver") I didn't fix the skge bug correctly. The value of the
new mapping (not old) was passed to pci_unmap_single.
If we enable CONFIG_DMA_API_DEBUG, it results in this warning:
WARNING: CPU: 0 PID: 0 at lib/dma-debug.c:986 check_sync+0x4c4/0x580()
skge 0000:02:07.0: DMA-API: device driver tries to sync DMA memory it has
not allocated [device address=0x000000023a0096c0] [size=1536 bytes]
This patch makes the skge driver pass the correct value to
pci_unmap_single and fixes the warning. It copies the old descriptor to
on-stack variable "ee" and unmaps it if mapping of the new descriptor
succeeded.
This patch should be backported to 3.11-stable.
Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Reported-by: Francois Romieu <romieu@fr.zoreil.com>
Tested-by: Mikulas Patocka <mpatocka@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/xen-netback')
0 files changed, 0 insertions, 0 deletions